One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,6,11,9)(4,7,13,16)(10,14,12,15)(17,18)(19,28)(20,30)(21,27)(22,24)(23,25)(26,31)(29,32)(33,34)(35,37)(36,40)(38,42)(39,46)(41,47)(43,48)(44,45)(1,2)(3,6)(4,7)(5,8)(9,11)(10,14)(12,15)(13,16)(17,19,23,22)(18,24,25,28)(20,29,31,27)(21,26,32,30)(33,35,38,41)(34,37,42,47)(36,44,46,43)(39,48,40,45)(18,25)(20,31)(24,28)(27,29)(33,36,38,46)(34,39,42,40)(35,43,41,44)(37,45,47,48)(1,2)(3,9)(4,7)(5,8)(6,11)(10,15)(12,14)(13,16)(17,20)(18,26)(19,29)(21,28)(22,27)(23,31)(24,32)(25,30)(33,36)(34,40)(35,44)(37,45)(38,46)(39,42)(41,43)(47,48) involution — undirected(1,3)(2,6)(4,12)(5,11)(7,15)(8,9)(10,13)(14,16)(17,21,23,32)(18,27,25,29)(19,30,22,26)(20,24,31,28)(33,35)(34,37)(36,43)(38,41)(39,45)(40,48)(42,47)(44,46)(1,4,5,13)(2,7,8,16)(3,10,11,12)(6,14,9,15)(17,22,23,19)(18,28,25,24)(20,27,31,29)(21,30,32,26)(33,37)(34,41)(35,42)(36,45)(38,47)(39,44)(40,43)(46,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.